gmane.comp.audio.oss.devel

Mailing list moving to Sourceforge

Hannu Savolainen — 2011-11-12T15:58:59

Hello all,

The server used to host current oss-devel mailing lists will be closed 
soon. The replacement list opensound-devel< at >lists.sourceforge.net is 
managed by SourceForge. Further postings should be sent to the new list.

Please register at 
https://lists.sourceforge.net/lists/listinfo/opensound-devel

Best regards,

Hannu

Re: OSS driver for OMAP4 Panda

Sathiya Krithikaivasan — 2011-10-26T19:36:24

Thank you very much Dev. I am using Linux 2.6.35 (in Android Gingerbread). I understand it is OSS V3. From your answer I understand I do need to include soundcore.c and oss/soundcard.c both in the build. Is that right?

I have problem with the later one. I do not have any macro in menuconfig that would include oss/soundcard.c in the kernel build. Can you help me with that?

Also why do I need the soundcard.c. What does it do that is not in soundcore.c?

-sathiya

-----Original Message-----
From: Dev Mazumdar [mailto:devmazumdar< at >gmail.com] On Behalf Of Dev Mazumdar
Sent: Wednesday, October 26, 2011 11:19 AM
To: Discussion mailing list for developers of OSS
Cc: Sathiya Krithikaivasan
Subject: Re: [oss-devel] OSS driver for OMAP4 Panda

Hi Sathya,

If you are developing an OSSv4 driver you should start from the OSSv4 
tree. The kernel/sound/oss tree is the kernel OSSv3 driver and for that 
yes, you do need souncard.c and sound_core.c to be compiled and linked 
with your driver.....it's best you try to link all

Re: OSS driver for OMAP4 Panda

Dev Mazumdar — 2011-10-26T18:18:56

Hi Sathya,

If you are developing an OSSv4 driver you should start from the OSSv4 
tree. The kernel/sound/oss tree is the kernel OSSv3 driver and for that 
yes, you do need souncard.c and sound_core.c to be compiled and linked 
with your driver.....it's best you try to link all the .o files statically.

regards
Dev Mazumdar

Sathiya Krithikaivasan wrote:

OSS driver for OMAP4 Panda

Sathiya Krithikaivasan — 2011-10-25T04:38:22

Hi

I am trying to create a OSS audio driver for a codec interfaced to OMAP4 on Pandaboard. My driver module is never initialized though I have made sure it is compiled in the kernel.

Can anyone help me answer the following questions?


1.    Do I need to have soundcard.c compiled in under sound/oss for any OSS driver to work?

2.    If the answer is yes for 1, The Makefile under the sound/oss lists the soundcard.o under sound-objs. How can I enabled in menuconfig to include these object files?


I am really stuck that I only see sound_core.c init call. But not the actual oss_init in the soundcard.c. Please help.

- Sathiya


|| Sathiya Krithikaivasan || Senior Systems Application Engineer || Audience Inc. ||

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Re: Status of USB audio support in OSS v4 on Linux ?

Wannabe Tsotsi — 2011-10-07T15:00:13

Thanks very much Hannu, this is a really useful head start, I now know where to focus my attention and aim to do so.

________________________________
From: Hannu Savolainen <hannu< at >opensound.com>
To: oss-devel< at >mailman.opensound.com
Sent: Thursday, 6 October 2011, 20:22
Subject: Re: [oss-devel] Status of USB audio support in OSS v4 on Linux ?

Hi,

The problem with USB audio is that it needs to work both with Linux and
Solaris which have rather different USB subsystems. Since the funding
for OSS came from Sun keeping the Solaris code functional has been the
priority.

USB audio recording worked under Linux until (around) 2.6.17 where the
semantics of the USB framework changed. The code in
setup/Linux/oss/build/usb_wrapper.inc needs to be modified in way or
another but I didnt manage to figure out how.

Best regards,

Hannu
--
5.10.2011 0.05, Wannabe Tsotsi wrote:

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Re: MIDI in jack not working, envy24HT (ap192)

2011-10-07T12:33:13

I made a work around to the problem.
The patch is at: http://pastebin.com/RMvtPZy4

First of all the status that it is waiting for (matching "& 0x80") to read  
input, does only occur when the RX queue is full.
What this means is that it will wait till the soundcard has stacked up alot of
midi events and then try to get them all at once.

So if I for example only press down a key on the midi keyboard the RX queue 
won't be full and it won't be transmitted to the midi in device.
This is obviously not the way it is supposed to work. I think it is trying to
look for if there is any input available. But I didn't see any change in status
when it where. The only change was when the RX queue was full.

So I removed that check and it works well now. IE no insane cpu loads or any
missed notes.

The other thing I had to change was the order that the midi devices are
registered in. So midi01 will be the input and midi00 will be the output
to work around the problem where it always assumes that midi01 is the input
devic

Re: Status of USB audio support in OSS v4 on Linux ?

Hannu Savolainen — 2011-10-06T19:22:54

Hi,

The problem with USB audio is that it needs to work both with Linux and
Solaris which have rather different USB subsystems. Since the funding
for OSS came from Sun keeping the Solaris code functional has been the
priority.

USB audio recording worked under Linux until (around) 2.6.17 where the
semantics of the USB framework changed. The code in
setup/Linux/oss/build/usb_wrapper.inc needs to be modified in way or
another but I didnt manage to figure out how.

Best regards,

Hannu
--
5.10.2011 0.05, Wannabe Tsotsi wrote:

Re: MIDI in jack not working, envy24HT (ap192)

Hannu Savolainen — 2011-10-06T19:16:17

Hi,

I will take a look at this in the future. At this moment I'm busy with
starting a new project on my daytime job. However maybe after few weeks.

Best regards,

Hannu
---
18.9.2011 5.56, Sebastian Parborg wrote:

Status of USB audio support in OSS v4 on Linux ?

Wannabe Tsotsi — 2011-10-04T21:05:06

Hi,

I've read that, on Linux, USB audio playback is experimental and record is not implemented.

I also read that changing the alt setting sometimes works for input !


Based on the above comments from the forums, it appears this is more likely a dev problem than a configuration issue.

My own testing with a USB headset shows playback working while record does not.

rec_callback() len == 0
oss usbaudio: Audio input timed out on device 13.

USB record and playback code in build-2005 and oss-devel head seem pretty comprehensive.


So, what is the current status of USB audio on Linux ?

Could someone outline what needs to be implemented to get input working, is there any work in progress ?

I don't want to step on any toes, but with some guidance I'm willing to program, debug, do whatever I can to help.

Thanks.
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Re: Question about lynxtwo module

Dev Mazumdar — 2011-09-23T06:14:11


The Lynxtwo firmware is based on a 2008 release ever since they came out 
with the Lynx AES16. Unfortunately newer versions of the firmware 
required a complete rewrite and frankly it's just too much work for too 
little revenue from the sales of OSS licenses.

We have approached Lynx to open source the drivers - they don't want it 
opensourced.  We have no problems opensourcing our work....so if you're 
a developer with the LynxTwo, you might be able to get the HAL from Lynx 
and then we can send you the source and you do the port.

regards
Dev Mazumdar


J. Lauer wrote:

Question about lynxtwo module

J. Lauer — 2011-09-22T15:38:07

I am a user with a question about the lynxtwo module.  On the Open Sound System
forum, cesium suggested sending a note to the
developer's mailing list, because he did not
know the answer.

Could someone please tell me which version 
of Lynx Studio's AES 16 driver the current
OSS lynxtwo module is based on?   
The reason I ask is that I would like to know
whether the OSS module is compatible with the
newest version of the firmware for the AES16.

Lynx Studio made an important improvement in the firmware in Firmware Build 24, 5 August 2010. This version of the firmware improves the operation of the hardware clock and reduces jitter.
Build 24 of the firmware requires Version
2.0 Build 14 of the Windows driver, or newer,
to function correctly.  So, I would appreciate knowing whether the lynxtwo module is based
on Version 2.0 Build 14 driver or newer.

Thank you,
 Steven German

Re: MIDI in jack not working, envy24HT (ap192)

Sebastian Parborg — 2011-09-18T02:56:44

Hmm...
After some debugging of the code in oss_envy24ht, it seems like the
driver code is working.
I added some more cmn_err outputs in the midi code and it seems like
it can read the input events that is sent to it from my midi keyboard.
The received events seem sane (when I print the RX queue and the input
read) but it seems like the output gets lost somewhere on the way to
the midi in device in /dev (midi00 in this case).

For example this is what I get in dmesg:
  Checking for input, status is 13
  Trying to read midi, input is 80
  /dev/midi01: Input buffer overflow

As you can see here the RX queue (status) is 0x13 and the input is 0x80.
However it seems like this trying to pass the information to the
midi01 device (output/MIDI out) and not my input device!

I think this explains why midi00 is always silent. But I have no idea
why it tries to use midi01 instead of midi00 as it will only listen to
input if i open the input device for reading.
An other thing I noticed is it seems like I can't send and re

Re: [PATCH] Linux scripts: Use CC and LD variables

Hannu Savolainen — 2011-09-10T14:48:55

Hi,

Many thanks. Applied to the current hg version.

-Hannu

9.9.2011 14.44, Lauri Kasanen wrote:

[PATCH] Linux scripts: Use CC and LD variables

Lauri Kasanen — 2011-09-09T11:44:20

Hi

These changes let cross-compiling work for my case (x86 > x64 and vice
versa).

- Lauri

Re: a problem with cuckoo

Hannu Savolainen — 2011-09-06T14:58:28

Hi,

For the time being I don't have any plans to touch cuckoo. However
nothing prevents somebody else from working on the problems.

Best regards,

Hannu
--
29.8.2011 16.50, Romain Lalaut wrote:

Re: a problem with cuckoo

Romain Lalaut — 2011-08-29T13:50:43

Hi,

I would like to know if it's planned to update cuckoo (I wasted two 
hours trying to get it work when I found this message).

Regards,

Re: 'OSS v4.x API reference - Developing applications for Open Sound System version 4.1' international

Hannu Savolainen — 2011-08-23T19:33:20

Hi,

To me it's OK to post the translation to your blog.

Best regards,

Hannu
--
7.7.2011 15.11, Alyona Lompar wrote:

Support for Xonar DG in Revision 2005

Ross Penner — 2011-08-09T21:10:51

I posted in the forums to get help because my card wasn't working.
(http://4front-tech.com/forum/viewtopic.php?f=5&t=4394)

I was advised that the support announced for the Xonar DG might have
been a typo, and they meant the DS. Is this true? if it is, are there
plans on supporting the DG?

'OSS v4.x API reference - Developing applications for Open Sound System version 4.1' international

Alyona Lompar — 2011-07-07T12:11:39

Hi!

I'm willing to translate page located at 
http://manuals.opensound.com/developer/ to the Belorussian language (my 
mother tongue). What I'm asking for is your written permission, so you 
don't mind after I'll post the translation to my blog. The translation 
is intended only for web, no print copies planned.

Visitors of your website, who come from Minsk (Belorussia) will be the 
ones, who will read this blogpost, that's the only way to spread them, 
no additional instruments we can use. Every translation we ever do does 
not costs a penny for the webpage, which is translated. All we ask is to 
link back in whatever way you feel confident about it.

You can leave a voice message and I will call you back, if you prefer a 
call instead of emails. Do you prefer email or IM for contact (if any 
questions regarding the translation arise)? What instant messaging 
client (if any) do you use? AIM, MSN, Skype?
Thank you!

Sincerely,
Alyona Lompar
+(360) 488-0303

---
This e-mail, including attachments, may inclu

Re: oss build 2005 download url?

Dev Mazumdar — 2011-08-12T00:02:39

Hi,

The OSS v4.2 build 2005 sources in GPL/BSD/CDDL are now uploaded to the 
website.


regards
Dev Mazumdar

---------------------------------------------------
4Front Technologies, Inc.
http://www.opensound.com
9826 Beverlywood Street, Los Angeles, CA 90064, USA
Tel: (310) 202 8530  Fax: (310) 202 0496
---------------------------------------------------


Florian Pritz wrote:

oss build 2005 download url?

Florian Pritz — 2011-08-11T18:56:20

Hi,

Where can I get the tarball for this release?
http://www.opensound.com/forum/viewtopic.php?f=19&t=4391

it's not in here:
http://www.4front-tech.com/developer/sources/stable/gpl/